How to thread a pipe: a detailed overview of the main methods
You like to carry out work on the improvement of the house by your own hand, without attracting various masters for this? Self-installation or repair not only allows you to save money on calling specialists, but also greatly increases self-esteem, because right?
In the process of installing utilities often there is a need to prepare the threads on pipes. We have to find ways not to spoil the product.
We will tell you how to thread with different tools, which method is preferable to use in this or that situation. The article considers ways that can be implemented by an unskilled performer. Cover the features of the cutting of different types of threads and equipment used in this.
The presented material is provided with illustrative photographs depicting the tools to perform the work. And the video with recommendations will help to understand in detail all the subtleties of this process.
Using an electric tapping machine
Like many modern electric household appliances, the electric thread cutter is very simple and easy to use. Especially useful when threading smaller workpieces. No need to worry about how to securely clamp the pipe.
It usually consists of a multi-diameter pliers and an electric device with a strong reverse gear. A piece of pipe is clamped in a special guide vise. The rest is easy. you press the trigger with your right thumb and thread.
An electric thread cutter makes it easier to thread smaller parts
Threading pipes with this method involves the risk that the electric thread cutter gets too hot and even overheats too quickly. Of course, if we are talking about the processing of a single part, there can be no problem. Although in this case there is a question of expediency of purchasing this expensive device. If it is supposed to perform several long threads, for example, on an inch pipe, then the electric thread cutter must be operated with great care. In addition, its dimensions do not always allow you to thread the pipe close to the wall.
Threading in 3 stages
What is considered essential when performing threading on pipes? The thread pitch must coincide with the pitch of the fittings for which the thread is cut. This is what guarantees the tightness and strength of the connection, as well as its ability to withstand high pressure. In order to achieve this you need to choose the right jig. But there are also nuances in the process of thread cutting itself. Let’s describe it step by step.
Stage 1. The pipe should be cleaned of dirt and rust (if the product is old). After that, you should remove the chamfer on the end. you can use a file for this. This will make it easier to screw on the tongs. Secure the pipe before you get started with the threading tool.
Step 2. To fix the tool in the holder, to center the cutting part of the tool on the workpiece, lubricate the pipe with machine oil or solidol. this makes it easier to turn the tool, avoids burrs on the thread and reduces the wear on the cutting edges.
Step 3. Start turning the handle of the tong. the first bits in the tong will start to thread, and the next bits will finish it for greater accuracy and precision. The thread pitch is equal to the number of full turns. You need to lubricate the tube while working.
There you go! Minimum effort, minimum tool purchase, minimum time. this is how you thread with a crescent club. See for yourself by making one or two test pieces on a piece of pipe. Next, you will be able to cut an even and accurate thread on the pipes that are installed in the plumbing system of your apartment or private home.
In our online store you can find hand held cloppers of various diameters. We only offer name-brand products, and you can be assured that you’ll get even, neat threads. Choose the right tool for the job right now, while most sizes are in stock!
You will need
It costs around 200-500. It all depends on the diameter and markup. Running models for 1/2″, 3/4″ and inch diameter as in my version.
You can ask plumbers for a Soviet analogue, if there is such a possibility. Then it will be generally free of charge for you.
Process layout requirements
For threading to be successful, it is important to follow the basic requirements:
- First, the surface is thoroughly cleaned of dirt and dust,
- Then you need to lubricate the surface of the working tool and the workpiece to be treated with a special liquid,
- Make sure the tool is in good working order before you start.
In the warehouse of Minsk wholesale and retail metal warehouse “Aksvil” you can pick up and buy any steel pipes you need for construction or plumbing work:
Threading with a handheld clincher
You can make tapping pipe easier by using the pipe threading claw with the ratchet and thread guide. The work is carried out in this sequence.
- Set the clevis in the ratchet.
- Apply oil to the cutting part of the clincher.
- Place a guide on the edge of the pipe to be worked.
- Turn the ratchet around its axis while threading.
- Add oil periodically to make it easier to move the tool.
The cutting part of the tool can become blunt after prolonged use, so it is necessary to monitor the condition of the tool and periodically resharpen it.
Using a hand clupp to thread the pipe
How to Tapping
Before tapping a thread, decide on the size, pitch and standard to be used. If you want to make a cut on a part that will fit into an existing piece, it is a good idea to first understand the dimensions of the piece. To do this, look for the appropriate markings next to the finished thread.
If it is not available, you can use a caliper or a special set with templates for notches of different standards to measure. You can also use a marked plumbing fixture for this if there are no other options. You can use it to figure out the diameter of the pipe.
To determine the pitch of the notch, you can mark 10 turns with a marker, measure the length of the entire section and divide it by 10. The resulting number is the pitch. The tool for threading should also be selected based on the diameter of the pipe and the pitch of the notch on the part with which you want to connect.
Before working with dies or a club, you should grind the surface of the pipe where the notch will be made, using a file, emery paper, or an angle grinder with a grinding wheel. The end of the part also needs to be ground and a chamfer made on it to start the job.
It is recommended that you apply lubricant to the surface of the part before threading to reduce resistance and friction and clamp it in a vise for better stability. Carefully tighten the holder and control the pressure on the tube’s wall to avoid bending it.
The first pass of the thread is made with a roughing die to make an indentation, and after that a finishing or intermediate device is used, because up to 5 passes over the thread may be necessary for hard metals.
When working with dibs or a club, keep the working surface of the tool perpendicular to the end of the pipe. During threading, you must apply slight pressure on the device and make a notch with slight turns (20-30°). It is recommended to continuously check the angle of the tool so that the threads are straight. This should be done during the first 2-3 turns, and then the cutting edge is firmly fixed by itself and there is no need to monitor the angle.
Threading internal pipe threads
The tube with internal thread is obtained with the help of two taps. roughing and finishing. Roughing tool removes about 70% of chips, finishing tool removes the rest.
The internal threads are threaded in this order:
- Preparing the hole. The hole in which the threading is performed should be well cleaned. Use emery cloth to remove all foreign matter and deposits from its surface.
- Selecting a tap with the right diameter.
- Tapping inside the hole. It is very important that the threading tool is in a vertical position.
- Beginning of rotary motion. They must be done in a clockwise direction.
Threaded water pipes are quite often used in modern household communications. With your own hands to equip the pipe with a thread. quite a real task. All you need to do is to buy the right tool, and make an effort. Threading on water pipes can be done not only by a professional master, but also by an amateur: the main thing is to follow the proposed recommendations clearly, and do not rush.